Re: Divide error in kvm_unlock_kick()

2014-06-17 Thread Chris Webb
I see kernel 3.15 is now out, so I retested with 3.15 guest and host. I'm still getting exactly the same guest kernel panic: a divide error in kvm_unlock_kick with -cpu host, but not with -cpu qemu64: divide error: [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 781 Comm: mkdir Not tainted 3

Re: Divide error in kvm_unlock_kick()

2014-06-01 Thread Chris Webb
I realised my original bug report was for a guest kernel compiled without frame pointers which might be unhelpful, so I enabled CONFIG_DEBUG_INFO and CONFIG_FRAME_POINTER, but I don't think this has made the backtrace any more detailed. Is there anything more I can do to pinpoint what might be goi

Re: Divide error in kvm_unlock_kick()

2014-05-29 Thread Chris Webb
Paolo Bonzini wrote: > Il 29/05/2014 19:45, Chris Webb ha scritto: >> Chris Webb wrote: >> >>> My CPU flags inside the crashing guest look like this: >>> >>> fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 >>> clflush >>> mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt

Re: Divide error in kvm_unlock_kick()

2014-05-29 Thread Paolo Bonzini
Il 29/05/2014 19:45, Chris Webb ha scritto: Chris Webb wrote: My CPU flags inside the crashing guest look like this: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl extd_apicid pni pclmulq

Re: Divide error in kvm_unlock_kick()

2014-05-29 Thread Chris Webb
Chris Webb wrote: > My CPU flags inside the crashing guest look like this: > > fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 > clflush > mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb lm rep_good nopl > extd_apicid pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 x2